Passkeys vs. Passwords vs. Magic Links: Choosing the Right Authentication Method

Passkeys have become a mainstream authentication option, with an estimated 5 billion active credentials worldwide, broad platform support, and growing organizational deployment, shifting the decision from whether to adopt passwordless login to which method best fits a product’s risks and users. Compared with passwords, magic links, and email or SMS one-time codes, passkeys provide the strongest phishing resistance because they are origin-bound cryptographic credentials rather than reusable secrets, while also improving login speed, success rates, and potentially support costs. However, they require careful handling of account recovery, cross-ecosystem device use, enterprise device management, and user education, particularly for audiences unfamiliar with the technology. Magic links and OTPs remain practical lower-effort alternatives for low-stakes products, early-stage teams, and nontechnical audiences, though they remain vulnerable to real-time phishing; passwords are best retained only as a fallback. Organizations are encouraged to introduce passkeys alongside existing methods rather than forcing immediate migration, and to use established WebAuthn SDKs or providers instead of implementing security-critical passkey ceremonies from scratch unless authentication is a core competency.

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